1. Actualités illustrées;Anderheggen;La Nature,1927
2. Notice of New Gigantic Fossils;Barbour;Science,1892
3. Notes on a New Order of Gigantic Fossils;Barbour;Nebraska Univ. Studies,1892
4. Nature, Structure, and Phylogeny of Daemonelix;Barbour;Bull. Geol. Soc. Amer.,1897
5. U-shaped Burrows near Blea Wyke;Bather;Proc. Yorks. Geol. Soc.,1925